Dipper shovel tooth



Oct. 25, 1938. SEAL I 2,134,344

DIPPER SHOVEL'TOOTH Filed May 21, 19:57

WITNESS ATTORNEYS.

Patented on. 25,1938 j i 1 f I 1 2,134,344

UNIT D STATES ATENTforties Application May 21, 1937, Serial: lilo. 144,049 I w I Z'Ciaims. (Cl. 317-442) The invention relates to a dipper or shovel'tooth of Figure 1 looking in the direction of thearrows. and more especially to a rivetless tooth and 're- Similar reference characters indicate correversible point for digging dippers or shovels'emsponding parts throughout the several views in ployedin dredgers, excavatorsorthelike. the drawing. f a The primary object of the invention isthe pro- Referringto the drawing, in detail, A desig 5 vision of a tooth of this character, wherein the nates generallyap'ortion' of the bottom of a dipper same can be removably attached to the forward or shovel employed in dred'gers, excavators or or digging edge of a dipper or shovel used in exother digging machinery while B denotes gencavators, dredgers or the like machines without erally a tooth constructed in accordance with the 10 the use of rivets or the like.

Another object of the invention is the proformed with an elongated body constituting a vision of a tooth of t character, wherein the tip 7 shank it) which for a portion of its length is upor point thereof is readily reversible to assure wardly struck from the bottomthereof to eifect at increased life in the use of the. tooth and to avoid central hollow ll opening through the under or is uneven wear thereon as well as eliminating the lower side thereof. At the forward end-of the possibility of the tooth becoming accidentally shank is an enlarged coupling terminal 12 proloosened or detached from the dipper or shovel vided with a rearwardly directed lower slotted as is the case when a tooth is riveted thereto and heel jaw l3 accommodating the forward'edge of at the same time minimizing the expense incident, the bottom A of the shovelor dipper, the shank i 0 to the use of rivets for the fastening of a tooth being rearwardly tapered and at its inner smaller to the dipper or shovel. end is formed a downwardly offset latching A further object of the invention is the protongue or his I for accommodation within a vision of a tooth of this character, wherein the substantially rectangular shaped opening l5 for maintaining at all times a good point to the tooth b v d abutment edge face I. p sed for fast digging purposes. counterseated in the opening ii for engagement so A further object of the invention is the proy a or sp d n y in n or v l d ed 9 vision of a tooth of this character, which is simple or a fast n key 0 par y received in the in construction, thoroughly reliable and efiective said opening I5 and releasably fitting a wedge in operation, readily and easily applied, assured s r or bolt 2| carrying a nut 22 and acof firmness and security on th ap li ati commodated in the said shank l0 so that in this thereof to a dipper or shovel, maintaining a good manner the a shank i0 the tooth B s 35 point at all times, strong, possessed of maximum tachably attached to the bottom A as clearly 7 life, and inexpensive to manufacture and install. shown in Fi re 1 of the drawin 4 combination and arrangement of parts as will be reversible p Point 23 which is u cated at pointed out in the claims hereunto appended. Projecting from he terminal I for the reversi- In the accompanying drawing: ble interfitting engagement of the point or tip 23 45 Figure 1 is a sectional view through the bottom with said terminal l2. This web 26 at the extenplied thereto and being in elevation. in opposite sides of the terminal l2 and effect, Figure 2 is a top plan view. the reduced web 26 thereof. g 60 Figure 3 is a bottom plan view. Passed transversely at the joint 29 between the Figure 4 is a fragmentary sectional view taken terminal i2 and the point or tip 23 through suiton the line 44 of Figure 1 looking in the direcable openings 30 and 3|, respectively, in the extion of the arrows. tensions 2| and web 26 is a fastener key or bolt 66 Figure 5 is a sectional view on the line 5-5 32 separably securing the tip or point 23 reversibly attached or fixed with the terminal II of the tooth B. The reversing of the tooth assures a balanced or uniform wear to the upper and lower faces of the point or tip 23 when the tooth B is attached to the bottom A of the shovel or dipper.

Formed on and projecting laterally from one side of the tip or point 23 is a protective nib or guard 33 for the nut 34 of the fastening key 32 when securing the point or tip 28 interfltted with the terminal ii of the tooth B.

The manner of fastening the tooth B to the bottom At of the shovel or dipper avoids the necessity of riveting this tooth thereto and also enables the attachment of the tooth with dispatch or its removal therefrom while the point or tip 23 is readily reversible in the interiitting thereof with the terminal I! of the said tooth.

The bottom A at the forward edge thereof is.

notched at 35 for the interfltting of the jaw l3 and said bottom for eliminating any lateral play of the tooth when fastened to the shovel, dipper or the like.

What is claimed is: v V

1. A tooth for a diggingshovel, dipper or the like having a bottom provided with an opening rearwardly of its lead edge and also having an overhang to said opening, comprising a shank the said bottom.

having a front Jaw formation for accommodating the lead edge' of said bottom. a substantially L-shaped terminal at the rear end of said shank and received in a part of the opening for hooking engagement with the overhang thereto, a plate within said opening and. wedged with the said terminal for holding the latter engaged with the overhang to said opening, and a fastener passed through the plate and the shank for separably securing the same together.

2. A tooth for a digging shovel, dipper or the like having a bottom provided with an opening rearwardly of its lead edge and also having an overhang to said opening, comprising a shank having a front jaw formation for accommodating the lead edge of said bottom, a substantially L- shaped terminal at the rear end of said shank and received in a part of the opening for hooking engagement with the overhang thereto, a plate within said opening and wedged with the said terminal for holding the latter engaged with the overhang to said opening, a fastener passed through the plate and the shank for separably securing the same together, and a reversible tip interfltted with the jaw formation, the jaw formation being interfitted with the lead edge of STANLEY SEAL. 

